from established solutions, in classical LOC, was shown
possible and simple, whereas ULOC fabrication demands
minimal efforts and infrastructure.
The roofed channel used to separate independent sealed
sectors (Fig. 1) also illustrates the advantage of direct additive
printing respect to replicas from templates. Independently of
the technology used to create the template, a seemly trivial
roofed element cannot be produced in a single manufacturing
step. On the other hand, templates are reusable, whereas direct
printing implies reprinting each new device. Unibody also optimizes
additive prototyping by minimizing the device thickness
and by exploiting the planar dimension, where the printer can
deliver sub micrometric surface roughness and reliable resin
removal in small features over long distance ranges.